Cartridge adapter



P 8, 3 A. w. PETERS I 1,753,472

I CARTRIDGE ADAPTER Filed Aug 8. 1928 lllllllllllfi V/IIIIIIIII/WPatented Apr. 8, 1930 AIR-THUR W. PETERS, OF ROCKFORD, ILLINOISCARTRIDGE ADAPTER Application filed August 8, 1928.

This invention relates to a device for adapting to a high-power rifleregular factoryloadecl cartridges of less power than those which therifle is normally intended to receive.

The object of the invention is to simplify the construction of suchdevices and thus reduce their cost, and to facilitate the association ofthe cartridge with the adapter.

In the accompanying drawings,

Figure 1 is a view of an adapter embodying the features of my invention,the cartridge being shown in operative relation to the adapter.

Fig. 2 is a longitudinal sectional view of the body or major unit of theadapter.

Fig. 3 is a View of the cartridge and two semi-cylindrical membersforming portions of the adapter.

The body 1 of the adapter is generally cylindrical and is adapted to beinserted into the chamber of the rifle. The body 1 is provided at itsrear end with an annular rim or extractor shoulder 2. The forward end ofthe body 1 has a chamber 3 the peripheral wall of which islongitudinally slit as at 4, to make said wall slightly yielding.

The cartridge A is provided with the usual rim or extractor flange A.The chamber 3 is of sufiicient diameter to admit the cartridge rimfirst, and is sufficiently deep to contain a substantial portion of thelength of the cartridge. The semi-cylindrical members 5 are adapted tosurround the cartridge just forward of the rim A. The forward ends ofthe semi-cylindrical members 5 have an annular shoulder 6 adapted toabut against or lie close to the forward end of the adapter body 1. Itwill be seen that the members 5 serve to increase the over-all diameterof that portion of the cartridge which lies in the chamber 3, to thediameter of the rim A.

In order to retain the cartridge in the chamber 3 during handling, thewalls of said chamber are provided with indentations producing bosses 7adapted to enter depressions 8 in the members 5.

As shown in Fig. 1, the diameter of the forward ends of thesemi-cylindrical men1- 50 bers 5 is the same as the diameter of the bodySerial No. 298,233.

1 so that there shall be no space between the forward ends of themembers 5 and the wall of the rifle chamber.

In the rear portion of the body is slidably mounted a firing pin 9, theforward end of which is axially alined with the cartridge A. The firingpin 9 may be attached to the body with freedom to move a limiteddistance by any suitable means, as, for example, a pin 10 fixed in thebody 1 and lying within an elongated notch 11 in one side of the firingpin.

The manner of use is as follows: After the members 5 have been appliedto the cartridge the latter is slipped into the chamber 3 and turneduntil the bosses 7 seat themselves in the recesses 8. The rear end ofthe cartridge is then in contact with the inner end wall of the chamber3. The adapter body 1 with the cartridge in place therein is theninserted into the chamber of the rifle. The blow of the hammer istransmitted through the firing pin 9 to the percussion cap of thecartridge A. When fired the shell of the cartridge expands so that thebosses 7 cannot be disengaged from the recesses 8 until the adapter hasbeen withdrawn from the chamber, after which a slight turn of thecartridge shell to right or left causes the bosses to spring out of therecesses and permits the fired shell to be withdrawn from the chamber 3.

It will be noted that the adapter is of very inexpensive construction,there being a minimum of machine work involved in its manufacture, andthat the method of use is very simple and expeditious. The means forattaching the cartridge to the adapter is of such nature as not to besubject to deformation or serious wear.

The invention is not limited to the details herein described, as changesmay be made within the scope of the appended claims. For instance, therim 2 would not be present in an adapter for rimless cartridges.

I claim as my invention:

1. A cartridge adapter comprising a body having a chamber in its forwardend, the peripheral wall of said chamber being slit to make said wallresilient, an inwardly extending boss on said wall, two semi-cylindricalmembers adapted to be applied to a cartridge forwardly of the rim of thelatter, said members having an annular shoulder adapted to lie close tothe forward end of said body when the cartridge is inserted into saidchamber, one of said members having a recess to receive said boss, and afiring pin slidably mounted in the rear end of the body;

' 2. A cartridge adapter comprising a body having a chamber in itsforward end, two

semi-cylindrical members adapted to be ap-' plied to a cartridgeforwardly of the rim of the latter, said members having an annularshoulder adapted to lie close to the forward end of said body when thecartridge is inserted into said chamber, means for holding the cartridgein said chamber, and a firing pin slidably mounted in the rear end ofthe body. In testimony whereof, I have hereunto affixed mys-ignature.

ARTHUR W. PETERS.

